2141121109 has 2 divisors, whose sum is σ = 2141121110. Its totient is φ = 2141121108.

The previous prime is 2141121097. The next prime is 2141121133. The reversal of 2141121109 is 9011211412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1745986225 + 395134884 = 41785^2 + 19878^2 .

It is a cyclic number.

It is not a de Polignac number, because 2141121109 - 2¹³ = 2141112917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2141121109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2141121139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070560554 + 1070560555.

It is an arithmetic number, because the mean of its divisors is an integer number (1070560555).

Almost surely, 2^2141121109 is an apocalyptic number.

It is an amenable number.

2141121109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141121109 is an equidigital number, since it uses as much as digits as its factorization.

2141121109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 2141121109 is about 46272.2498804629. The cubic root of 2141121109 is about 1288.8837386010.

The spelling of 2141121109 in words is "two billion, one hundred forty-one million, one hundred twenty-one thousand, one hundred nine".